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微信小程序自定义波浪组件

2019-08-20 23:06:06 iwh718
0  评论    0  浏览

最近看到好多app上有波浪背景,有动态的,有静态的,这里是在小程序中用得动态。

先看看效果图:里面的文本是组件内部定义的。

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这是用两个svg的图片用css关键帧动画做的效果(这里谢谢子弹短信里前端群的小伙伴提供的web版的css动画文件)

在小程序中使用,注意一个问题:就是svg不可以直接使用,需要转为base64(这个大家应该有收藏吧),这里我已经转换好了,在下面的wxss中。

这里顺便用一下自定义组件:

首先定义组件 wave

wave.wxml:这里我默认是用得显示个人信息。其中isShowInfo来控制是否显示

<!--utils/wave/waves.wxml-->
<view class="zr">
    <view class='user_box' hidden="{{isShowInfo}}">
        <view class='userInfo'>
            <open-data type="userAvatarUrl"></open-data>
        </view>
    <view class='userInfo_name'>
        <open-data type="userNickName"></open-data>,欢迎您
    </view>
</view>
    <view class="water">
        <view class="water-c">
            <view class="water-1"> </view>
            <view class="water-2"> </view>
        </view>
    </view>
</view>

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wave.js:这里组件定义一个私有方法 __hideInfo(),用来隐藏内部组件,灵活运用很方便。

// utils/wave/waves.js
Component({
/**
* 组件的属性列表
*/
properties: {
},

/**
* 组件的初始数据
*/
data: {
isShowInfo:false
},

/**
* 组件的方法列表
*/
methods: {
__hideInfo:function(){
this.setData({
isShowInfo:true
})
}
},

})

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wave.json:第一个是设置为自定义组件,第二个可选是使用其他的自定义组件,比如引用组件,一会就会用得

{
"component": true,
"usingComponents": {}
}

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wave.wxss:zr的背景直接改为自己需要的,或者用属性传递。

/*组件背景颜色*/
.zr {

background: #0396FF;
width: 100%;
height:100px; position: relative;
}

.water {
position: absolute;
left: 0;
bottom: -10px;
height: 30px;
width: 100%;
z-index: 1
}

.water-c {
position: relative
}

.water-1 {
background: url("data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiIHN0YW5kYWxvbmU9Im5vIj8+Cjxzdmcgd2lkdGg9IjYwMHB4IiBoZWlnaHQ9IjYwcHgiIHZpZXdCb3g9IjAgMCA2MDAgNjAiIHZlcnNpb249IjEuMSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIiB4bWxuczp4bGluaz0iaHR0cDovL3d3dy53My5vcmcvMTk5OS94bGluayIgeG1sbnM6c2tldGNoPSJodHRwOi8vd3d3LmJvaGVtaWFuY29kaW5nLmNvbS9za2V0Y2gvbnMiPgogICAgPCEtLSBHZW5lcmF0b3I6IFNrZXRjaCAzLjQgKDE1NTc1KSAtIGh0dHA6Ly93d3cuYm9oZW1pYW5jb2RpbmcuY29tL3NrZXRjaCAtLT4KICAgIDx0aXRsZT53YXRlci0xPC90aXRsZT4KICAgIDxkZXNjPkNyZWF0ZWQgd2l0aCBTa2V0Y2guPC9kZXNjPgogICAgPGRlZnM+PC9kZWZzPgogICAgPGcgaWQ9IuaIkSIgc3Ryb2tlPSJub25lIiBzdHJva2Utd2lkdGg9IjEiIGZpbGw9Im5vbmUiIGZpbGwtcnVsZT0iZXZlbm9kZCIgc2tldGNoOnR5cGU9Ik1TUGFnZSI+CiAgICAgICAgPGcgaWQ9Ii0iIHNrZXRjaDp0eXBlPSJNU0FydGJvYXJkR3JvdXAiIHRyYW5zZm9ybT0idHJhbnNsYXRlKC0xMjEuMDAwMDAwLCAtMTMzLjAwMDAwMCkiIGZpbGwtb3BhY2l0eT0iMC4zIiBmaWxsPSIjRkZGRkZGIj4KICAgICAgICAgICAgPGcgaWQ9IndhdGVyLTEiIHNrZXRjaDp0eXBlPSJNU0xheWVyR3JvdXAiIHRyYW5zZm9ybT0idHJhbnNsYXRlKDEyMS4wMDAwMDAsIDEzMy4wMDAwMDApIj4KICAgICAgICAgICAgICAgIDxwYXRoIGQ9Ik0wLDcuNjk4NTczOTUgTDQuNjcwNzE5NjJlLTE1LDYwIEw2MDAsNjAgTDYwMCw3LjM1MjMwNDYxIEM2MDAsNy4zNTIzMDQ2MSA0MzIuNzIxMDUyLDI0LjEwNjUxMzggMjkwLjQ4NDA0LDcuMzU2NzQxODcgQzE0OC4yNDcwMjcsLTkuMzkzMDMwMDggMCw3LjY5ODU3Mzk1IDAsNy42OTg1NzM5NSBaIiBpZD0iUGF0aC0xIiBza2V0Y2g6dHlwZT0iTVNTaGFwZUdyb3VwIj48L3BhdGg+CiAgICAgICAgICAgIDwvZz4KICAgICAgICA8L2c+CiAgICA8L2c+Cjwvc3ZnPg==") repeat-x;
background-size: 600px;
-webkit-animation: wave-animation-1 3.5s infinite linear;
animation: wave-animation-1 3.5s infinite linear
}

.water-2 {
top: 5px;
background: url("data:image/svg+xml;base64,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") repeat-x;
background-size: 600px;
-webkit-animation: wave-animation-2 6s infinite linear;
animation: wave-animation-2 6s infinite linear
}

.water-1,
.water-2 {
position: absolute;
width: 100%;
height: 60px
}

.back-white {
background: #fff
}

@keyframes wave-animation-1 {
0% {
background-position: 0 top
}
100% {
background-position: 600px top
}
}

@keyframes wave-animation-2 {
0% {
background-position: 0 top
}
100% {
background-position: 600px top
}
}
.user_box {
display: flex;
z-index: 10000!important;
}

.userInfo_name {
flex: 1;
vertical-align: middle;
width: 100%;
margin-left: 5%;
margin-top: 5%;
}

.userInfo {
flex: 1;
width: 100%;
border-radius: 50%;
overflow: hidden;
max-height: 50px;
max-width: 50px;
margin-left: 5%;
margin-top: 5%;
border: 2px solid #fff;
}

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组件定义完,下面是引用这个组件:

index.json:这里用到了userxxx使用我们定义的组件,引用名为wave,这也是一会使用的节点名,和view一样直接用

{
//使用组件,引用名(直接当做节点使用),路径
"usingComponents": {
"wave": "../com/wave/waves"
}
}

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index.wxml

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index.js:通过wave设置的id获取组件对象,调用私有方法。去除内部信息。

 onLoad: function (options) {
      this.wave = this.selectComponent("#wave");
      this.wave.__hideInfo()
  },

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再来一个静态图:

null

好了。


标题:微信小程序自定义波浪组件
作者:iwh718
地址:看看我的CSDN

web站点:骇客猫科技资讯



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